[Amps] Ameritron AL-80B

[Mitch Cox]

Sounds like a tank circuit issue. You might check to see if the tank coil is tapped correctly, From memory I think it should tap on the 4th or 5th turn for ten meters. It could be something else but that is what I would look at first and then to see that either of the capacitor (C1 & C2) plates are touching or arcing on ten.
  ----- Original Message ----- 
  From: s-roabr at online.no 
  To: Mitch Cox ; amps at contesting.com 
  Sent: Tuesday, September 13, 2011 1:25 AM
  Subject: Re: [Amps] Ameritron AL-80B


  Yes, all seems normal in Swr... the tube goes cherry red... so some mismatch....other pa gives 1kw on same antenna...

  sent by HTC
  LA6FJA K3RAG Stein Roar Brobakken

  ----- Reply message -----
  Fra: "Mitch Cox" <ww4cox at embarqmail.com>
  Dato: tir., sep. 13, 2011 00:36
  Emne: [Amps] Ameritron AL-80B
  Til: <amps at contesting.com>, <s-roabr at online.no>

  Have you looked at the SWR between the radio and amp on 10 meters?
   ----- Original Message ----- 
   From: s-roabr at online.no 
   To: amps at contesting.com 
   Sent: Monday, September 12, 2011 6:18 PM
   Subject: [Amps] Ameritron AL-80B


   Hi

   I have a AL-80B, all bands is ok. But it have max 300w on 10m. Any idea how to find out why?
   Any one have had same problem?

   sent by HTC
   LA6FJA K3RAG Stein Roar Brobakken



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